Seat cushion



FIG. 1 is a three-quarter perspective view of a new design of a seat cushion;

FIG. 2 is a top plan view of the design shown in FIG. 1;

FIG. 3 is a front elevational view of the design shown in FIG. 2;

FIG. 4 is a rear elevational view of the design shown in FIG. 2;

FIG. 5 is a side elevational view taken from the left side of the seat cushion as shown in FIG. 2, the right side view being a mirror image thereof;

FIG. 6 is a bottom plan view of the design as shown in FIG. 2 showing cross-sectional indices;

FIG. 7 is a cross-sectional view of the design along the line 7--7 with reference to FIG. 6; and,

FIG. 8 is a cross-sectional view of the design along the line 8--8 with reference to FIG. 6. 

The ornamental design for a seat cushion, as shown and described. 